Coupling device.



J. H. BELTZ@ GOUPLING DEVISE.'

APPLICATION FILED JAN. 13. 1910.

962,733, Patented June 28, 1910.

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W :11min WITNE'SSES: INVENTOR.- LEM 3.60, fl/M, BTW AMOR/YET:

UNITED STATES PATENT OFFICE.

TOI-IN H. BEL'IZ, OF ST. PAUL, MINNESOTA, ASSIGNOR OF ONE-HALF 'IOADOLPH MOHR, OF ST. PAUL, MINNESOTA.

COUPLING DEVICE.

To all whom it may concern:

Be it known that T, JOHN H. BELTZ, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented a new and useful Coupling Device, of which the followingis a specification.

lily invention relates to coupling means for draft appliances of variouskinds and is especially adapted for coupling together the parts by whicha vehicle or any of its parts are drawn, including car couplings,vehicle couplings clevises &c.; and the object of the invention is toprovide in such appliances a coupling pin which when given about half aturn will automatically lock itself against accidental escape from itsplace and when given another half turn will automatically unlock itselfand be ready for removal.

In the accompanying drawing,--Figure 1 is a side view of a draft clevisprovided with my safety draft pin, or coupling device as T may term theinvention. Fig. 2 is a left hand end view of Fig. 1. Fig. 3 is a detailview of the rear side of the pin in Fig. 2. Fig. 4 is a top view of avehicle pole or tongue with parts of a swingle-tree and whittle-treeshowing how my improved pin may be applied through the front end of thehammer strap of such draft gears. Fig. 5 is a top view of a reach, reachsocket, hounds and rear axle of a wagon, with my novel draft pin appliedto the reach socket for holding the reach adjustably therein.

Referring to the drawing by reference numerals, 1 designates a draftclevis or any clevis used for connecting two parts safely but separablytogether. Through common round holes in the arms 2 and 3 of the clevisis inserted a coupling pin 4, the head end of which is provided with athumb piece 5 and therebelow with an annular Groove 6, below which is acollar 7 having a radial notch 8, (see Figs. 2 and 4) near which thecollar is beveled as at 9 in Fig. 2. At the opposite side from saidnotch the pin is provided with a flared cavity 10, in which is normallyengaged one end of a spring arm 11, whose other end is formed with aneye 12 that is secured at 13, preferably by dropping it upon a stud caston the clevis and then upsetting the end of the stud with a hammer or adie. The spring arm is held in alinement with the arm of the clevis byan apertured lug 14 formed on the latter.

Specification of Letters Patent.

Application filed. January 13, 1910.

Patented June 28, 1910.

sel-iai No. 537,825.

In Fig. 4 is shown how the elements 11, 12, 13 and 14 just described maybe provided upon a hammer strap 15 secured by bolts 16 to a pole ortongue 1T and the pin 4 passed downward through the front end of saidstrap and through a swingle-tree 18, to which whittle-trees like 19 maybe attached. 18 may also represent any form of evener bar or draftequalizing bar.

In Fig. 5 the elements 11, 12, 13 and 14 are shown as applied to theupper plate of a reach socket 20, secured by hounds 21 to the rear axle22 of a vehicle, and having a reach 23 slidably mounted in it andprovided with apertures 24, either of which may be engaged by the pin 4,which is passed through it and through the upper and lower plates of thesocket.

In Figs. 1, 2 and 8 is shown that the lower end of the pin may have anannular groove (3X with a notch SX, and opposite therefrom a flaredcavity 10X in which normally engages one end of a spring arm 11X, whichis inserted in a. lug 14X and has its other end or eye 12X secured on astud 13X on the lower arm of the clevis. The spring arm may thus beapplied to either the head end or point end of the pin, and where eXtrasafety is required both ends of the pin may each be engaged by a springarm; but in the latter case the notches S and SX are connected by alongitudinal groove Q5 in one side of the pin (see Fig. 2) as a clearingfor the end of the upper spring arm 11 in removing and inserting thepin.

To operate the device the pin is simply inserted into the parts to becoupled while its notch, or notches, are turned toward the spring arm,or arms, and by giving the pin half a turn in either direction thespring arm or arms, will yield, as shown in dotted lines in Fig. 4, andthen spring into straight position and engagement with the flared cavityor cavities of the pin, and by such engagement fully prevent accidentalwithdrawal of the pin or even the turning movement of the pin necessarybefore it can be removed. To remove the pin the operator takes hold ofthe flat head of the pin and by giving it half a turn bends the springarm or arms out of the cavity or cavities of the pin and allows the armor arms to spring into the notch or notches at the opposite side of thepin, whereupon the pin is extracted.

What claim is: y

l. In a coupling device the combination with a primary member having ahole for a coupling pin adapted to engage in a secondary member and acoupling pin insertible in said hole, of a spring arm mounted on theprimary member and normally directed into the path of some part of thepin, said pin having at one side a flared cavity for the spring arm toenter into and at the opposite side a notch for the spring arm to passthrough during the insertion and removal of the pin.

2. In a. coupling device the combination with a primary member having ahole for a coupling pin adapted to engage in a secondary member and acoupling pin insertible in said hole, of a spring arm mounted on theprimary member and normally directed into the path of some part of thepin, said pin having at one side a flared cavity for the spring arm toenter into and at the opposite side a notch for the spring arm to passthrough during the insertion and removal of the pin; and an annulargroove about the pin from said cavity to said notch.

3. In a coupling device the combination with a primary member having ahole for a coupling pin adapted to engage in a secondary member and acoupling pin inserti-` ble in said hole, of two spring arms mounted onthe primary member and normally directed partly into the path of somepart of the pin, one near each end of thel pin, said pin having at oneside two cavities adapted for engagement with the ends of the two springarms when the pin is inserted, and in the side diametrically oppositefrom said cavities a groove along the pin as a clearing for the ends ofthe Spring arms during the insertion and removal of the pin.

In testimony whereof I aHiX my signature, in presence of two witnesses.

JOHN H. BELTZ.

Witnesses A. M. CARLSEN, E. C. CARLSEN.

